The outcomes of casino games may be determined by chance alone, as in the purely random activity of a tossed pair of dice or of the ball on a roulette wheel, or by physical skill, training, or prowess in athletic contests, or by a combination of strategy and chance. The rules by which casino games are played sometimes serve to confuse the relationship between the components of the game, which depend on skill and chance, so that some players may be able to manipulate the online casino game to serve their own interests.
Thus, knowledge of the game is useful for playing poker or casino on horse racing but is of very little use for purchasing lottery tickets or playing slot machines. A gambler may participate in the game itself while casino on its outcome card games, craps, or he may be prevented from any active participation in an event in which he has a stake professional athletics, lotteries. Some games are dull or nearly meaningless without the accompanying casino activity and are rarely played unless wagering occurs coin tossing, poker, dice games, lotteries.
In other games casino is not intrinsically part of the game, and the association is merely conventional and not necessary to the performance of the game itself horse racing, football pools. Commercial establishments such as casinos and racetracks may organize gambling when a portion of the money wagered by patrons can be easily acquired by participation as a favored party in the game, by rental of space, or by withdrawing a portion of the casino pool. Some activities of very large scale horse racing, lotteries usually require commercial and professional organizations to present and maintain them efficiently.
Casino on horse racing is a leading form of gambling in countries and it also exists in many other countries. Wherever horse racing is popular, it has usually become a major business, with its own newspapers and other periodicals, extensive statistical services, self-styled experts who sell advice on how to bet, and sophisticated communication networks that furnish information to casino, bookmakers and their employees, and workers involved with the care and breeding of horses. The same is true, to a smaller extent, of dog racing. The emergence of satellite broadcasting technology has led to the creation of so-called off-track casino facilities, in which bettors watch live telecasts at locations away from the racetrack.